Do you need a building permit (permis de construire) in France?

Yes. A permis de construire is required for new buildings, large extensions, and works that modify the external appearance, volume or use of a structure above certain floor-area thresholds. Smaller works that fall below these thresholds may instead require a déclaration préalable de travaux (DP). The applicable thresholds depend on the zone, 20 m² in areas without a PLU, or 40 m² in zones covered by a PLU, subject to a cumulative 150 m² total floor-area cap.

How long does it take to get planning permission in France?

The statutory instruction period is three months for a single dwelling (PCMI) and four months for other projects, counted from the date on which the mairie receives a complete dossier. Projects in protected zones or requiring environmental assessments may take five to six months. Requests for complementary documents during instruction suspend the clock until the applicant responds, so practical timelines are often longer.

What documents are needed to apply for a building permit in France?

The core documents include the completed Cerfa application form (n° 13406*12 for a single dwelling or n° 13409*12 for other projects), a site location plan, site layout plan, elevations, floor plans, a descriptive notice, photographs, proof of ownership, and, where required, specialist studies and evidence of the architect’s mandate. A full checklist is provided in the Required Documents section above.

How much does planning permission cost in France?

There is no single national fee for the permit itself. Costs typically comprise architect fees (6%–12% of construction value where an architect is mandatory), professional fees for plan preparation (€900–€5,000+), and local taxes, principally the taxe d’aménagement, which is calculated based on floor area and local rates and can range from a few hundred to many thousands of euros. All figures are indicative and should be verified locally.

Can a foreign owner apply for a permis de construire in France?

Yes. Foreign nationals and foreign-incorporated entities may apply for a permis de construire on the same basis as French applicants, provided they can demonstrate title or a valid mandate from the property owner. Where an architect is required, a French-registered architect must sign the application. Foreign-language documents supporting the application (e.g. powers of attorney, corporate authorisations) may need to be translated by a sworn translator (traducteur assermenté) and, in some cases, legalised or apostilled.

What happens if I start works before the permit is granted or before the appeal period expires?

Commencing works without a valid permit, or before the two-month third-party appeal period following site display has expired, exposes the builder to criminal penalties, administrative fines, and orders requiring restoration of the site to its original condition, including compulsory demolition at the builder’s expense. If a third-party appeal is filed during the display period, works should not commence until the administrative tribunal has resolved the challenge. Applicants in this situation should contact a construction lawyer immediately.

How do I appeal if my building permit application is refused?

A refusal decision may be challenged by filing an administrative appeal (recours gracieux) with the Mayor within two months of the refusal, requesting that the decision be reconsidered. If the gracious appeal is unsuccessful or unanswered within two months, the applicant may file a recours contentieux before the administrative tribunal within two months of the rejection of the gracious appeal (or within two months of the original refusal if no gracious appeal was filed). In urgent cases, an application for interim suspension (référé-suspension) may be made to the tribunal to prevent irreversible harm while the appeal is pending.

When should I hire a lawyer for a building permit application in France?

Legal advice is advisable at any stage where complications arise, particularly if the site is in a protected zone, if the mairie raises objections during instruction, if the permit is refused, or if a third-party appeal is filed. A construction lawyer can also review the architect’s contractual mandate and the terms of the building contract to ensure that liability provisions, the garantie décennale and insurance obligations are properly addressed. The Global Law Experts lawyer directory lists qualified practitioners across France.

How To Obtain A Building Permit In France

Understanding how to obtain a building permit in France is essential for any developer, property owner, contractor or legal adviser planning works that alter a building’s external appearance, volume, footprint or designated use. The French permis de construire is the principal authorisation required before construction can begin on most significant projects, and it is issued by the Mayor of the commune where the site is located, or, in limited cases, by the State. Instruction periods run to three months for a single dwelling and four months for other projects, though 2026 municipal Plan Local d’Urbanisme (PLU) reviews under the Relance Logement programme are adding complexity and heightened scrutiny to many applications.

This guide sets out the complete permis de construire process, eligibility checks, required documents, costs, timelines and appeal routes, so that applicants can submit a robust dossier and avoid the most common causes of delay and refusal.

Overview of the Building Permit Process and Who It Applies To

A permis de construire is the full planning permit required under the Code de l’urbanisme for new construction, large extensions, and any project that modifies the external structure or use of an existing building beyond certain thresholds. It is distinct from the lighter déclaration préalable de travaux (DP), which covers smaller-scale works such as minor extensions, fences, or changes to windows and doors that do not exceed the applicable floor-area thresholds.

The building permit France framework requires a permis de construire in the following principal scenarios:

New construction. Any new stand-alone building with a floor area (surface de plancher) or footprint (emprise au sol) exceeding 20 m² (or 40 m² in zones covered by a PLU, subject to a cumulative 150 m² cap).
Major extensions and alterations. Works that create additional floor area above the thresholds applicable to a DP, or that change the destination of the building (e.g. converting commercial premises to residential).
Protected sites. Projects in conservation areas, near listed monuments, or within the perimeter of an Architecte des Bâtiments de France (ABF) zone, where even smaller works may require a full permit.

Quick Decision Flow

Is the project a new build or does it create more than 20 m² (or 40 m² in PLU zones) of floor area? → Permis de construire required.
Does the total floor area of the property after works exceed 150 m²? → Architect is mandatory.
Are the works below all thresholds and limited to minor external changes? → A déclaration préalable (DP) may suffice.
Is the site in a protected zone (ABF, Natura 2000, listed building perimeter)? → Expect additional consultations and potentially longer instruction periods.

In 2026, many communes are revising their PLU documents under the Relance Logement stimulus programme. The likely practical effect is that zoning boundaries, density allowances and heritage protections are shifting, sometimes mid-application. Applicants should check the current PLU status with the mairie before assembling their dossier, and again shortly before submission, to confirm that the applicable rules have not changed.

Eligibility and Requirements for a Building Permit in France

Before preparing an application, the applicant must confirm both personal eligibility and site-specific requirements. Getting these wrong is one of the most frequent causes of outright refusal.

Who Can Apply

The permis de construire application may be filed by the property owner, a person holding a valid authorisation from the owner (such as a power of attorney), or the holder of certain rights over the land (e.g. a long-term leaseholder). Foreign nationals and foreign-incorporated companies may apply on the same basis, provided they can demonstrate title or a valid mandate. Where an agent acts on behalf of the owner, a signed power of attorney must accompany the dossier.

Architect Obligation, The 150 m² Rule

Under the Code de l’urbanisme, recourse to a registered architect is mandatory where the project results in a total floor area (surface de plancher) exceeding 150 m². This threshold applies to the total area of the building after works, not merely the area being created. Natural persons building for their own personal use are exempt from the architect obligation only if the project remains below 150 m².

Where an architect is required, the architect must sign the Cerfa application form and the principal plans. The contractual mandate between the owner and the architect should specify the scope of the architect’s mission (design, planning application, site supervision), liability provisions, and compliance with the garantie décennale (ten-year structural warranty). Early indications suggest that municipal services are scrutinising architect mandates more closely in 2026 as part of broader permit-quality initiatives.

Land Use Checks, Reading the PLU and Identifying Constraints

Every commune with a PLU publishes zoning maps and regulatory rules that specify permissible building types, heights, setbacks, green-space ratios and architectural styles. Before filing, applicants should:

Obtain a certificat d’urbanisme. This optional but highly recommended document, issued by the mairie, confirms the planning rules applicable to a specific plot and any servitudes or pre-emption rights. It is valid for 18 months and crystallises the applicable rules for that period.
Check for protected zones. If the site falls within the perimeter of a listed monument (within 500 metres), a Natura 2000 area, or a site covered by an ABF, additional consultations will be required and the instruction period may extend beyond the standard timeline.
Verify servitudes and rights of way. Cadastral records and the local conservation des hypothèques can reveal easements, rights of way and underground utility constraints that may restrict building plans.

Requesting a certificat d’urbanisme is strongly advisable in 2026 given the number of PLU revisions in progress, it provides a snapshot of applicable rules and protects the applicant against mid-process changes for the duration of its validity.

Step‑by‑Step Procedure to Obtain a Building Permit in France

The permis de construire process follows a defined sequence from pre-application due diligence through to the commencement of works. The following steps reflect the standard procedure applicable across France.

Step 1, Conduct Pre‑Application Checks and Early Due Diligence

Verify the PLU zoning, consult the cadastral plan, and identify all servitudes and environmental constraints applicable to the plot. If the site is in a conservation or ABF zone, make early contact with the relevant authority to understand additional requirements. Gather baseline documents: the title deed, cadastral extract, any previous permits, and a topographic survey if the terrain is sloped or complex. This step is carried out by the applicant, the architect (if already engaged) or a planning consultant, and typically takes one to four weeks.

Step 2, Prepare the Dossier

Assemble the complete application file. The dossier is built around the official Cerfa application form, Cerfa n° 13406*12 for a single dwelling (permis de construire pour une maison individuelle et/ou ses annexes, known as PCMI) or Cerfa n° 13409*12 for other projects. The Cerfa form must be completed in full and, where an architect is required, signed by both the applicant and the architect.

Supporting plans and documents required alongside the Cerfa form are detailed in the Required Documents section below. All plans must comply with the format, scale and legend standards specified in the Code de l’urbanisme. The architect or designer prepares the site plan (plan de situation), site layout (plan de masse), elevations (plan des façades et toitures), floor plans (plan des niveaux), and the descriptive notice (notice descriptive) explaining project compliance with the PLU. The applicant supplies date-stamped photographs, the title deed, and any specialist studies (environmental, acoustic, structural) required for the site. Preparation typically takes two to eight weeks depending on project complexity.

Step 3, Submit the Dossier to the Mairie

File the completed dossier either online through the commune’s digital portal or in person at the mairie. Since 2022, all communes with more than 3,500 inhabitants are required to accept electronic submissions through a guichet numérique. In practice, many smaller communes also offer online filing, though some may still require paper copies for display or consultation purposes.

On submission, request an accusé de réception (acknowledgement of receipt). This document records the date of deposit, which marks day zero of the statutory instruction period. The mairie has one month from receipt to notify the applicant if the dossier is incomplete; if no notification is received within that month, the dossier is deemed complete as of the original date of deposit.

Step 4, Instruction, Consultations and Requests for Complementary Documents

The municipal service instructeur (planning instruction service) reviews the dossier for compliance with the PLU, the Code de l’urbanisme, and any applicable technical regulations. During this phase, the service may consult external bodies, the ABF for heritage sites, the Direction Départementale des Territoires (DDT) for environmental constraints, fire safety services, or network operators for utility connections.

The standard instruction period is three months for a single dwelling (PCMI) and four months for all other projects from the date of a complete dossier. However, if the service instructeur requests complementary documents or additional information, the statutory clock is suspended until the applicant provides the requested items. This suspension can add weeks or months to the practical timeline. In protected zones or for projects requiring an environmental impact assessment, the instruction period may be extended to five or six months by operation of law.

If the mairie does not issue a decision within the statutory period and has not notified any extension, a tacit (implied) permit may arise. However, reliance on tacit permits carries significant legal risk, applicants should obtain written confirmation from the mairie before commencing works.

Step 5, Receive the Decision, Display the Permit and Commence Works

A positive decision takes the form of an arrêté (municipal order) granting the permis de construire, which may include conditions (prescriptions). The applicant must then display a standardised permit notice (affichage réglementaire) on the site, visible from the public road, throughout the entire duration of the works. This display triggers a two-month appeal period during which any interested third party (typically neighbours) may challenge the permit before the administrative tribunal.

The permit is valid for three years from the date of issue. If works have not commenced within three years, the permit lapses. The applicant may request a one-year extension (renewable once) before expiry. Works are considered commenced once significant and continuous preparatory operations have begun on site, merely installing fencing is generally insufficient.

Before starting works, the applicant must file a déclaration d’ouverture de chantier (DOC) with the mairie. On completion, a déclaration attestant l’achèvement et la conformité des travaux (DAACT) must be filed, after which the mairie has between three and five months to inspect and challenge conformity.

Step	Who Does It	Typical Duration
Pre‑application checks (PLU, servitudes, ABF)	Applicant / Architect / Planning consultant	1–4 weeks
Dossier preparation (plans, Cerfa, reports)	Architect / Designer / Applicant	2–8 weeks (depends on complexity)
Submission (online or deposit at mairie)	Applicant / Architect	Immediate (date of deposit = day 0)
Instruction (municipal review + consultations)	Municipal service instructeur (+ consulted bodies)	3 months (single house) or 4 months (other projects); may extend for complex/protected sites
Applicant provides complementary documents (if requested)	Applicant / Architect	Variable, clock suspended until complete
Decision issued and site display begins	Mayor / Applicant	Decision served within statutory period; display triggers 2‑month third-party appeal window
Appeal period expires; works may commence	Applicant	2 months from date of continuous, visible site display

Note: Where the instruction period is extended (e.g. ABF consultation, environmental assessment), the mairie must notify the applicant of the extended deadline within one month of receiving the complete dossier. If no extension notice is received, the standard 3- or 4-month period applies.

Required Documents for a Building Permit in France

An incomplete dossier is the single most common cause of delay. The documents needed for a permis de construire application are prescribed by the Code de l’urbanisme and vary slightly depending on whether the application concerns a single dwelling (PCMI) or another type of project. The table below sets out the core required documents.

Document	Notes
Cerfa application form	Cerfa n° 1340612 (single dwelling / PCMI) or Cerfa n° 1340912 (other projects). Completed, signed by applicant; countersigned by architect if mandatory. Digital PDF accepted.
Plan de situation (site location plan)	Shows the plot within the commune; nearby roads, landmarks and scale/legend required. Prepared by surveyor or architect.
Plan de masse (site layout plan)	Shows building footprint, distances to boundaries, access points, landscaping, drainage and existing structures. Produced by architect or designer.
Plan des façades et toitures (elevations and roof plan)	Elevation drawings of all façades showing materials, colours, openings and roof profiles. Architect or designer.
Plan de niveaux / sections (floor plans and cross-sections)	Floor plans for each level and at least one cross-section showing heights, floor levels and materials. Architect or designer.
Notice descriptive (descriptive statement)	Written statement explaining the project, its integration into the surroundings, and compliance with the PLU. Authored by architect or designer.
Photographs of the site and surroundings	Date-stamped photographs showing the site in its immediate and wider context. Applicant or architect.
Graphic insertion document	Photomontage or 3D rendering showing the project in its built environment. Required for most applications.
Title deed / cadastral plan extract	Proof of ownership or right to build. Cadastral extract obtained from the mairie or online cadastre portal.
Proof of mandate (if agent applies)	Power of attorney signed by the owner authorising the agent to submit and manage the application.
Specialist studies (where required)	Environmental impact assessments, acoustic studies, structural reports, flood-risk assessments, required in constrained zones or for larger projects. Commissioned to qualified specialists.
Certificat d’urbanisme (optional but recommended)	Issued by the mairie on request; confirms applicable planning rules and constraints. Validity: 18 months. Strongly recommended in 2026 given ongoing PLU revisions.

Where the total floor area exceeds 150 m², the dossier must include evidence of the architect’s mandate and the architect’s professional stamp on the principal plans. Projects within ABF or heritage zones should include additional heritage-sensitive drawings and may require retouched visual simulations demonstrating integration with the protected environment.

Timeline and Key Deadlines for a Building Permit in France

The question of how long it takes to get planning permission in France has a clear statutory answer, though practical experience often diverges. The instruction period begins on the date the mairie acknowledges receipt of a complete dossier:

3 months for a single dwelling and its annexes (PCMI).
4 months for all other projects (commercial, multi-unit residential, mixed-use).
5–6 months where the project requires consultation with the ABF, an environmental authority or is subject to an impact assessment.

The statutory clock is computed from the date de dépôt complet, the date on which the mairie receives a dossier containing all mandatory items. If the dossier is incomplete, the mairie has one month to issue a notification de pièces manquantes. The applicant then has three months to supply the missing items; failure to do so results in the application being treated as withdrawn. Once the missing items are received, the instruction period restarts from that date.

Requests for complementary documents during the instruction phase (distinct from an incomplete-dossier notice) suspend rather than restart the clock. The suspension lasts until the applicant provides the requested material. Industry observers expect that 2026 PLU revisions will increase the frequency of such mid-instruction requests as municipal services reconcile applications against updated zoning rules.

After the permit is granted, the applicant must display the permit notice on site continuously for the duration of works. The two-month third-party appeal period runs from the first day of continuous, visible display. Construction may legally begin only after this appeal period has expired without challenge, or, if a challenge is filed, after the administrative tribunal has ruled.

The permit remains valid for three years. A one-year extension may be requested (twice, for a maximum of two additional years) provided the request is filed at least two months before the permit expires and the applicable planning rules have not changed materially since the permit was issued.

Costs, Fees and Tax Considerations for a Building Permit in France

There is no single national application fee for a permis de construire in France. The cost of obtaining a building permit is driven primarily by professional fees, specialist studies and local taxes. The following table provides indicative ranges, actual costs vary significantly by project scale, location and the professionals engaged.

Item	Typical Amount (Indicative)	Notes
Architect fees (mandatory if total floor area > 150 m²)	6%–12% of construction cost (or fixed fee per project)	Varies by project complexity; higher for full design-and-supervision mandates.
Planning application preparation (professional fees)	€900 – €5,000+	Designer or planning consultant fees for drawings, studies, dossier assembly.
Local planning / administrative fees	Usually nil to several hundred €	Most communes do not charge a processing fee for the permit itself. Verify with mairie.
Taxe d’aménagement	Several hundred to many thousands of €	Calculated by reference to floor area, a fixed national value per m², and communal/departmental rates. Payable on completion. Check rates with the mairie.
External consultants (ABF, environmental, acoustic, structural)	€500 – €10,000+	Required only where specialist studies are mandated by site constraints.
Application reproduction and filing costs	€0 – €200	Printing, postage, digital hosting of plans.

All figures are indicative and should be verified with the relevant professional and/or the local mairie before budgeting. Architect fee structures vary by region and mandate scope.

The taxe d’aménagement merits particular attention. It is calculated using a formula combining the floor area created, a national base value per square metre (revised annually), and communal and departmental percentage rates. Some departments and communes have increased their rates in recent years, and applicants should request a simulation from the mairie or the departmental Direction des Finances Publiques before committing to a project budget.

What Changes in 2026 for the Permis de Construire Process

Two developments in 2026 materially affect how applicants should approach the building permit process in France:

Municipal PLU revisions under Relance Logement. The French government’s Relance Logement housing stimulus is driving widespread PLU updates across metropolitan and urban communes. Many municipalities are revising density rules, green-space ratios, height limits and heritage protections during 2026. For applicants, this means that zoning rules applicable at the start of dossier preparation may differ from those in force at the date of submission. The most effective mitigation is to obtain a certificat d’urbanisme early, it crystallises the applicable rules for 18 months, and to confirm the current PLU status with the mairie immediately before filing.

Expanded digital filing infrastructure. Building on the mandatory dematerialisation introduced in 2022 for communes with more than 3,500 inhabitants, the Ministry for Ecological Transition has continued to expand digital portal availability and functionality. More communes now offer full end-to-end electronic processing, including digital acknowledgements and online tracking. However, municipal variance persists: some smaller communes still require supplementary paper copies or in-person consultations, and applicants should confirm submission format requirements with the relevant mairie before filing.

Common Pitfalls When Applying for a Building Permit in France and How to Avoid Them

Incomplete dossier. Missing plans, unsigned Cerfa forms or absent specialist studies trigger a one-month notification and a three-month cure period, delaying the project by months. Mitigation: cross-check every item against the Cerfa requirements list and have the architect or designer verify completeness before submission.
Ignoring PLU constraints. Submitting plans that violate setback, height or density rules results in refusal. Mitigation: request a certificat d’urbanisme before beginning design work, and review the PLU zoning rules for the specific plot.
Failing to engage an architect when required. If the total floor area after works exceeds 150 m² and no architect has signed the dossier, the application will be refused. Mitigation: calculate total surface de plancher (existing plus new) early and appoint an architect if the threshold is reached.
Inadequate or missing site display. The two-month appeal period runs only from the first day of continuous, visible display. If the notice is removed, obscured or improperly formatted, the appeal period does not begin, exposing the applicant to third-party challenges years later. Mitigation: use the standardised display panel, photograph it with date stamps, and maintain it throughout works.
Starting works before the appeal period expires. Commencing construction before the two-month display period lapses (or before an appeal is resolved) risks injunctions, fines and compulsory demolition at the applicant’s cost. Mitigation: wait until written confirmation that no appeal has been filed, or obtain legal advice before commencing if timing is critical.

If a permit is refused or a third-party appeal is filed, applicants should seek legal advice promptly. Administrative appeals against refusal must generally be filed within two months of the refusal decision, and emergency interim measures (référé-suspension) may be available in certain circumstances. Qualified construction lawyers can be identified through the Global Law Experts lawyer directory.

Need Legal Advice?

This article was produced by Global Law Experts. For specialist advice on this topic, contact Shaparak Saleh at Three Crowns, a member of the Global Law Experts network.